Rosie Huntington-Whiteley is showing off her baby bump in style.The 34-year-old model took to Instagram on Sunday to bare her burgeoning bump with a pair of snapshots showing off two different ensembles.The first pic, the expectant mom showed off her stomach on an oversized, unbuttoned blue shirt, which she wore with loose-fitting black slack and a full-length white pea coat.The second pic in the slideshow hid the baby bump all together under a glossy, black vinyl trench coat, tied at the waist